Stuck in 4wd low on 2005 Chevrolet Trailblazer

Used the 4wd low when we had ice storm. Will not go back to any other setting

Asked by for the 2005 Chevrolet Trailblazer
I suppose you have push button controls. Of course try to change it in neutral. If not working it could be the encoder motor, a fuse, or it may need scanned with a Tech2 scan toll to read the transfer case module for the fault and repair.